# 公用的自定义工具类
import functools

from flask import current_app
from flask import g
from flask import session
from info.models import User




def do_index_class(index):
    """返回指定索引对应的类名"""

    if index == 0:
        return  "first"
    elif index == 1:
        return "second"
    elif  index == 2:
        return  "third"
    return  ""


def user_login_data(f):
    @functools.wraps(f)
    def wrapper(*args,**kwargs):
        user_id = session.get("user_id",None)
        user = None
        if user_id:

            try:
                user =  User.query.get(user_id)
            except Exception as e :
                current_app.logger.error(e)
        g.user = user

        return  f(*args,**kwargs)

    return  wrapper





def  query_user_data():
    user_id = session.get("user_id", None)
    user = None
    if user_id:
        # 尝试查询用户的模型
        try:
            user = User.query.get(user_id)
        except Exception as e:
            current_app.logger.error(e)
